Messages in this thread | | | From | Jing Zhang <> | Subject | [PATCH RFC 0/4] Add JSON metrics for arm CMN and Yitian710 DDR | Date | Mon, 27 Mar 2023 10:46:08 +0800 |
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Hi all,
I add an identifier sysfs file for the yitian710 SoC DDR and arm CMN to allow userspace to identify the specific implementation of the device, so that the perf tool can match the corresponding uncore events and metrics through the identifier. Then added several general CMN700 metrics and yitian710 soc DDR metrics.
Since the eventid of cmn700 events is different from other events, it can't be specified by "EventCode" or "ConfigCode", so in the cmn.json file of cmn700, no "EventCode" and "ConfigCode" are added for these events. For example, the eventid of "arm_cmn_0/hnf_sf_hit is/": cat /sys/bus/event_source/devices/arm_cmn_0/events/hnf_sf_hit type=0x5,eventid=0x6
In addition, both cmn700 and ddr PMU can count the information in a die, but the same SoC can also be configured with different numbers of dies, so it is dificult to design a general expression to obtain metrics in different dies. The current yitian710 ddr bandwidth metric describes the sum of all dies bandwidth. I would like to ask you, is there any general expression can obtain metrics for die? Add an option to specify die?
Thanks, Jing
Jing Zhang (4): driver/perf: Add identifier sysfs file for CMN perf vendor events: Add JSON metrics for cmn700 driver/perf: Add identifier sysfs file for Yitian 710 DDR perf vendor events: Add JSON metrics for Yitian 710 DDR
drivers/perf/alibaba_uncore_drw_pmu.c | 27 ++ drivers/perf/arm-cmn.c | 43 +++ .../pmu-events/arch/arm64/arm/cmn700/sys/cmn.json | 188 +++++++++++ .../arch/arm64/arm/cmn700/sys/metrics.json | 74 ++++ .../arm64/freescale/yitian710/sys/ali_drw.json | 373 +++++++++++++++++++++ .../arm64/freescale/yitian710/sys/metrics.json | 20 ++ tools/perf/pmu-events/jevents.py | 2 + 7 files changed, 727 insertions(+) create mode 100644 tools/perf/pmu-events/arch/arm64/arm/cmn700/sys/cmn.json create mode 100644 tools/perf/pmu-events/arch/arm64/arm/cmn700/sys/metrics.json create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/yitian710/sys/ali_drw.json create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/yitian710/sys/metrics.json
-- 1.8.3.1
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